Journal ArticleDOI
Stability of a flexible wheelset for high speed rail vehicles with constant and varying parameters
Junghsen Lieh,J. Yin +1 more
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In this article, the stability of an elastic wheelset coupled with torsional spring and damper is studied for both constant and time-varying models, where the variation in conicity is assumed to be periodic.Abstract:
The stability of an elastic wheelset coupled with torsional spring and damper is studied in this paper. With flexible elements between two wheels, the advantages of both rigid and independently rotating wheel systems may be obtained. Previous investigations indicated that axle flexibility will affect the vehicle dynamic behavior and an optimal design may improve the system performance. Those studies were limited to constant wheel/rail geometry as the wheelset rolls along the track. In this paper, it is intended to determine the critical speed regions for both constant and time-varying models. The variation in conicity is assumed to be periodic thus the Floquet stability concept may be employed. The computation of the state-transition matrix is based on a Runge-Kutta algorithm.read more
Citations
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Influence of a flexible wheelset on the dynamic responses of a high-speed railway car due to a wheel flat
TL;DR: The results suggest that the wheelset flexibility can lead to significantly higher axle-box vibration and wheelset axle stress compared to a rigid wheelset in the presence of a wheel flat.
Journal ArticleDOI
Reliability and fatigue life evaluation of railway axles
TL;DR: In this paper, the authors investigated failures in axles of rail vehicles serving the Istanbul Transportation Co. and derived life equations and diagrams by using one of the cumulative life theories known as the Palmgren-Miner method.
Journal ArticleDOI
Coupled dynamic behaviour of a transmission system with gear eccentricities for a high-speed train
TL;DR: In this article, the coupled torsion vibration responses of a high-speed train were examined for the transmission system of a motor car, which directly affects the operating reliability and running safety of the high speed train.
Journal ArticleDOI
Investigation for Failure Response of Suspension Spring of Railway Vehicle: A Categorical Literature Review
TL;DR: In this article, a multibody framework approach is introduced that can be utilized to create complex model of railroad vehicle suspension system, which is used as primary suspension to absorb shock and vibration in rail vehicle system which calls for investigation under failure response because of different loading conditions.
Journal ArticleDOI
Anti-skid Control System Analysis of a Tilting Train
TL;DR: In this article, the authors present dynamic modeling of a tilting train and the brake system of the train, and analyzes the anti-skid logic used in the tilting trains.
References
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Journal ArticleDOI
On the action of a locomotive driving wheel
TL;DR: In this article, the authors considered the problem of determining the tractive force per unit creepage, longitudinally and transversally, between a wheel and a rail in a two-dimensional manifold.
Review of wheel-rail rolling contact theories
TL;DR: In this article, the rolling contact theories that emerged principally in the past two decades are described with special emphasis on their performance and on the ideas underlying them, and they serve as a mine of ideas for those who seek to improve the present-day theory of rolling contact.
Journal ArticleDOI
The Railway Wheelset and Suspension Unit as a Closed-Loop Guidance Control System: A Method for Performance Improvement
TL;DR: In this article, a closed-loop guidance control system for railway wheelset and suspension unit is presented, where the centre line of the track corresponds to the input, and the lateral position of the centroid of the wheelset to the output.
Journal ArticleDOI
Effects of truck design on hunting stability of railway vehicles
J. A. Hadden,E. H. Law +1 more
TL;DR: In this paper, a general model of a dual-axle railway vehicle truck is derived and the effects of various design parameters on the critical speed for hunting are examined for each configuration.